package com.atguigu.tingshu.album.service.impl;

import com.atguigu.tingshu.album.config.MinioConstantProperties;
import com.atguigu.tingshu.album.service.FileUploadApiService;
import io.minio.*;
import io.minio.errors.*;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

/**
 * @Author: hsl
 * @CreateTime: 2025-02-18  13:35
 */
@Service
public class FileUploadApiServiceImpl implements FileUploadApiService {

    @Resource
    private MinioConstantProperties minioConstantProperties;
    @Override
    public String uploadFile(MultipartFile file) throws IOException, ServerException, InsufficientDataException, ErrorResponseException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        MinioClient minioClient =
                MinioClient.builder()
                        .endpoint(minioConstantProperties.getEndpointUrl())
                        .credentials(minioConstantProperties.getAccessKey(), minioConstantProperties.getSecreKey())
                        .build();
        //判断桶是否存在
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder()
                .bucket(minioConstantProperties.getBucketName()).build());
        if (!bucketExists) {
            //不存在，新建
            minioClient.makeBucket(MakeBucketArgs.builder()
                    .bucket(minioConstantProperties.getBucketName()).build());
            //权限设置
            //桶的访问权限
            String policy = """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }""".formatted(minioConstantProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().
                    bucket(minioConstantProperties.getBucketName())
                    .config(policy).build());
        }
        //向桶中传递文件
        //uuid 解决重名问题
        //时间解决乱放不规整问题
        String objectName = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/"
                + UUID.randomUUID().toString().replaceAll("_", "")
                + "_" + file.getOriginalFilename();
        //minioClient.uploadObject() 传递本地的
        //minioClient.putObject() 传递内存中的文件数据  流 字节数组
        minioClient.putObject(PutObjectArgs.builder()
                .bucket(minioConstantProperties.getBucketName())
                .object(objectName)
                .stream(file.getInputStream(), file.getSize(), -1) //-1 无限制不切割
                .contentType(file.getContentType()).build());
        //拼接地址URL
        return String.join("/", minioConstantProperties.getEndpointUrl(),
                minioConstantProperties.getBucketName(), objectName);
    }
}
